package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        // 进行md5加密，然后再进行比对
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }


    // 新增员工的实现类
    @Override
    public void save(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        // 对象属性拷贝
        BeanUtils.copyProperties(employeeDTO, employee);

        // 设置账号状态,默认为正常状态，1表示正常，0表示锁定
        employee.setStatus(StatusConstant.ENABLE);
        // 设置密码,默认密码为123456，md5加密
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));
        // 设置创建时间,更新时间
//        employee.setCreateTime(LocalDateTime.now());
//        employee.setUpdateTime(LocalDateTime.now());
//
//        // 设置创建人id,更新人id
//        // TODO, 获取当前登录用户的id
//        employee.setCreateUser(BaseContext.getCurrentId());
//        employee.setUpdateUser(BaseContext.getCurrentId());
//
          employeeMapper.insert(employee);

    }


    /*
    * 员工分页查询
    * @Param employeePageQueryDTO
    * */
    @Override
    public PageResult pageQuery(EmployeePageQueryDTO employeePageQueryDTO) {
        // 获取分页查询参数
        // select * from employee limit 0,10
        // 开始分页查询(使用PageHelper插件)
        PageHelper.startPage(employeePageQueryDTO.getPage(), employeePageQueryDTO.getPageSize());
        Page<Employee> page=employeeMapper.pageWQuary(employeePageQueryDTO);
        long total = page.getTotal();
        List<Employee> employeeList = page.getResult();
        return new PageResult(total, employeeList);

    }


    /*
    /*
    * 启用禁用员工账号
    * */
    @Override
    public void startOrStop(Integer status, Long id) {
       Employee employee = Employee.builder()
               .id(id)
               .status(status)
               .build();
       employeeMapper.updataStatus(employee);

    }

    /*根据id查询*/
    @Override
    public Employee  getById(Long id) {
       Employee employee =employeeMapper.getById(id);
       employee.setPassword("加密了");
       return employee;
    }


    /*
    * 编辑用户信息
    * @Param employee*/
    @Override
    public void updata(EmployeeDTO employeeDTO) {
        // updata emlopyee set...where id=?
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO,employee);

        // 设置更新时间,和更新人
//        employee.setUpdateTime(LocalDateTime.now());
//        employee.setUpdateUser(BaseContext.getCurrentId());
        employeeMapper.updata(employee);

    }

}
